gistfile1.js

function Drawer() {

  this.listeners = {
    "init": [],
    "close": [],
    "open": [],
    "select": []
  }

  var self = this;

  cordova.exec(function(evt) {

    if (self.listeners[evt.action]) {
      self.listeners[evt.action].forEach(function(l) {
        l(evt.param);
      });
    }

  }, function(err) {}, 'NavDrawerPlugin', 'init', []);

}

Drawer.prototype.on = function(evt, listener) {
  this.listeners[evt].push(listener);
}

Drawer.prototype.openDrawer = function(success, failure) {
  cordova.exec(success, failure, 'NavDrawerPlugin', 'openDrawer', []);
};

Drawer.prototype.closeDrawer = function(success, failure) {
  cordova.exec(success, failure, 'NavDrawerPlugin', 'closeDrawer', []);
};